In the author's opinions, ________.
A. Venus is likely to be able to be inhabited by the people from the earth now
B. we have successful plans to solve the crowded conditions on the earth
C. the most urgent thing is that we are short of resources on earth
D. now the earth is the most suitable planet to live on
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患者，男性，45岁，右侧下颌第一磨牙拔除后3个月，要求烤瓷固定桥修复，经检查，确认右侧下颌第二磨牙和第二前磨牙的牙根长度及牙槽骨高度均适宜，可以选作固定桥的基牙，但右侧下颌第二前磨牙部分牙冠缺失，X线照片显示尖周有阴影，此时，应首先选择的治疗措施为
A. 右侧下颌第二前磨牙成品根管钉固位，银汞做核
B. 右侧下颌第二前磨牙铸造桩核
C. 右侧下颌第二前磨牙完善的根管治疗
D. 右侧下颌第二前磨牙牙本质钉固位，银汞做核
E. 右侧下颌第二前磨牙干髓术治疗
In lines 11 - 12, the phrase "radically different form" refers to
A. pop music in relation to non-pop music in the Caribbean
B. music different from that which Adorno had previously considered
C. a style of popular music that did not exist in the United States
D. music which was outside the control of mass communication
E. the influence of rock 'n' roll, or lack thereof, on Calypso
In the author's opinion, who is the most influential person in Great Britain
A. The Crown.
B. The Prime Minister.
C. The House of Commons.
D. The House of Lords.
It can be inferred from the passage that the author believes which of the following concerning the top-down method of nanotechnology
A. The top-down method tends to be accurate but highly inefficient, resulting in a process that takes a great deal of time and energy.
B. The top-down method, unlike the bottom-up method, tends to disobey the rules of many chemical interactions.
C. The top-down method requires a greater level of technological involvement than does the bottom-up method.
D. The top-down method shows the limits of nanotechnology methods that rely too heavily on parallel processes.
E. The top-down method is fairly useless when applied to the problem of creating a single molecule.
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